oral contraceptive pill vs contraceptive pill

oral contraceptive pill and contraceptive pill both are nouns.

Word	Noun	Adjective	Verb	Adverb
oral contraceptive pill	Yes	No	No	No
contraceptive pill	Yes	No	No	No

As nouns, oral contraceptive pill and contraceptive pill are synonyms defined as:

oral contraceptive pill and contraceptive pill: a contraceptive in the form of a pill containing estrogen and progestin to inhibit ovulation and so prevent conception

Other synonyms of oral contraceptive pill include anovulant, anovulatory drug, birth control pill, oral contraceptive, pill.

oral contraceptive pill (noun)	contraceptive pill (noun)
a contraceptive in the form of a pill containing estrogen and progestin to inhibit ovulation and so prevent conception	a contraceptive in the form of a pill containing estrogen and progestin to inhibit ovulation and so prevent conception